My mower boundary wire got a break in it this spring, and unlike previous times, I didn’t know why. So now I had to check the perimeter of my lawn for damage, and in most cases the wire is underground or at least undergrass. Turns out there’s a better way!
It took shoving a LONG screwdriver into the ground, but I was able to use a wire toner tracer between the screwdriver and one of the wire ends. It wasn’t audible very far from the wire itself, unfortunately, so finding the wire could be a challenge. The break turned out to be the neighbor’s lawn aeration hitting the line. Wire strippers and waterproof wire nuts made it a quick fix.